Abeka Science Matter and Energy Test 7 Practice

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• What term refers to the region where a planet's magnetic influence is detected?
• How does filtration separate a mixture of sand and water?
• How is heat transferred?
• How do simple machines affect work input and output?
• Which description correctly defines a homogeneous mixture?
• Which term describes the ability to do work or cause change?
• Which circuit protection device melts a thin strip of metal when overloaded?
• Four light bulbs are connected in series to a 6.0 V battery. Each bulb has a resistance of 10 Ω. Calculate the total current through the circuit.
• Which statement best describes a physical change?
• What term describes an object with an equal number of positive and negative charges?
• What is an object capable of attracting materials by a magnetic force?
• Identify an example of energy being transformed.
• Which statement best describes a physical change?
• What is Ohm's law expressed as an equation?
• What does the law of conservation of mass state?
• What determines whether an object sinks or floats in water?
• Which term describes the work per unit charge done to move electric charges between different parts of an electric field?
• What is electrification by friction?
• Power of electric current is given by P = V I.
• Energy stored due to position is called what?
• Which is a chemical change?
• Three light bulbs are connected in parallel to a 12 V battery. Each bulb has a resistance of 14 Ω. What is the total voltage of the circuit?
• What is potential energy?
• Name a measurable property used to identify substances.
• Why is wood a poor conductor of heat compared to metal?
• Which factors influence the loudness of a sound?
• What distinguishes transparent, translucent, and opaque materials?
• What is the approximate value of the speed of light in a vacuum?
• What is the phase change from gas to liquid called?
• A magnetically hard material is best described as which property?
• Which statement best defines magnetism?
• In physics, what is work?
• Three identical resistors of 6 Ω are connected in parallel to a 12 V battery. What is the total current drawn from the battery?
• In a parallel circuit, which statement is true about the voltage across each branch?
• A positively charged rod touches the top of an uncharged electroscope. Describe the leaves' movement when a negatively charged rod is brought near to the top of this electroscope.
• What is buoyant force?
• What best differentiates an element from a compound?
• What does the law of conservation of energy state?
• What method would you use to separate salt from seawater?
• Which statement correctly describes the basic electrostatic interactions between charges?
• What is power in physics?
• What is the unit of electrical resistance?
• Which statement correctly describes the three classic states of matter and a key property of each?
• What is the purpose of a material's specific heat capacity?
• In a parallel circuit with bulbs, what happens to the brightness of existing bulbs if another bulb is added in parallel?
• A material through which current does not easily flow is called a
• What is a solution?
• How do two like charges interact when brought close to each other?
• A device draws 8 A at 9 V. What is its power?
• In a parallel circuit, the reciprocal of total resistance equals the sum of reciprocals of the individual resistances.
• What is convection?
• In a sand and water mixture, which component passes through the filter?
• Which statement correctly defines solvent and solute?
• Which example best distinguishes kinetic energy from potential energy?
• Which statement is true about sound speeds in different media?
• Is measuring the total resistance of a circuit before and after adding an extra bulb enough to determine whether the bulbs are in series or parallel? Why or why not?
• If one wire is twice as long as another wire that is otherwise identical, what is true about their resistances?
• Which of the following describes the resistance of a magnet to being demagnetized by another magnetic field?
• Which description best fits a physical change?
• What happens to the total current flowing in a parallel circuit when more branches are added?
• What method of magnetism is used when a needle is magnetized by holding a magnet near the needle?
• Which formula represents Coulomb's law for the electric force between two point charges?
• What is density and how is it calculated?
• What is a crystal lattice?
• In a solution, which statement correctly describes the solute and the solvent?
• In Scenario 2, with one positive red ball and one negative blue ball on a smooth surface, when a second positive red ball is placed between them, the blue ball tends to move toward the middle red ball while the other red ball moves away. Which forces explain this behavior?
• A circuit that contains a complete path for electrons to flow through is a closed circuit.
• What is the volume of a regular-shaped object with length 3 cm, width 2 cm, and height 4 cm?
• Two light bulbs are connected in parallel to a 6.0 V battery. Each bulb has a resistance of 10 Ω. What is the total resistance of the circuit?
• In a closed system, what happens to total energy as energy changes form?
• Which equation expresses Ohm's law to solve for current?
• How does distillation separate a mixture based on boiling points?
• Which property would you use to identify a substance by its boiling behavior?
• Which statement is true about a coil's magnetic field when current increases?
• What is a physical property? Provide an example?
• What is the region of concentrated magnetism at the end of a magnet?
• Which temperature scale is preferred in scientific measurements?
• Which term describes a device that absorbs electrical energy and converts it to light or heat?
• In a diamagnetic material, which statement is accurate?
• Which statement best describes a simple machine?
• Three resistors of 5 Ω, 5 Ω, and 10 Ω are connected in series. What is the total resistance?
• Which strategy improves the energy efficiency of a device?
• Which of the following is an example of a chemical change?
• Which statement about light at a boundary is correct?
• How do you determine the volume of an irregular-shaped object?
• Why is a control group important in an experiment?
• Which statement describes a simple machine?
• What is used to indicate the direction and strength of a magnetic field?
• What causes a light ray to bend when entering a different medium?
• What circuit-protection device uses a narrow strip of metal to prevent excessive current through a circuit?
• Two common signs that a chemical change has occurred?
• Which statement describes reflection?
• Which of the following is the SI unit of electric current?
• Which of the following is an example of a reversible physical change?
• Which materials are attracted to magnets?
• What is a hypothesis in a science experiment?
• In a parallel circuit, which statement is true?
• In a first-class lever, where is the fulcrum located?
• Which belt protects Earth from solar wind?
• Which device converts electrical energy into light and thermal energy?
• Which process imparts electric charge to an object at a distance without direct contact between the objects?
• What is refraction?
• Which statement about energy forms is true?
• Which factor increases the rate of heat transfer?
• For two resistors in parallel, which expression correctly represents the total resistance?
• What is a primary purpose of forming an alloy?
• Which example represents an element?
• What is thermal energy?
• What determines the pitch of a sound?
• Which separation method removes water to leave salt behind when treating seawater?
• Which term describes a substance with no net electric charge?
• What term describes a substance that has several unpaired electrons per atom and is strongly attracted to magnets?
• What is temperature?
• What is the orientation of the lines of flux when the inclination at the magnetic poles is 90°?
• In an electromagnet, increasing loops from 50 to 100 results in the strength quadruples.
• When a solid chunk of ice is placed in warm water, is this a physical or chemical change?
• Which statement best defines buoyant force?
• What is insulation?
• Which energy form is associated with the random motion of particles and with temperature?
• In a circuit with two resistors in series, each 6 Ω, connected to a 12 V battery, what is the current?
• What is visible light?
• Permeability is the extent to which a material can absorb or channel lines of flux.
• What happens to kinetic energy when particles move faster?
• During diffusion, what causes particles to spread out over time?
• What is diffusion and what causes it?
• How can you strengthen the magnetic field produced by a coil?
• If two point charges of opposite sign are separated by distance r, and the distance is doubled, what happens to the magnitude of the electric force between them?
• Which statement best describes the difference between a physical change and a chemical change?
• Which term best describes a material that allows current to flow readily in a circuit?
• The force between two charged objects is 5.0 N. If one of the objects is replaced by an object with half the charge, what is the new force (assume distance is the same)?
• Heat transfer by radiation occurs how?
• Give an everyday example of a physical change.
• What is volume?
• A magnet is cut in half. Why does this not form a monopole, even though one half contains the original north pole and the other half contains the original south pole?
• Which statement best describes which factor would not affect the color you see?
• What is the difference between mass and weight?
• Which of the following is NOT a form of energy listed among common energy forms?
• What are the three fundamental states of matter?
• What is the most important factor affecting the ease of current flow through a wire?
• Which statement correctly defines acceleration?
• If an object floats, what can be inferred about its density relative to the surrounding fluid?
• If a metal block's density is greater than water's density, what happens?
• What is the phase change from liquid to solid called?
• Which term describes a substance that has several unpaired electrons per atom and is strongly attracted to magnets?
• Two charges in vacuum are 2.0 m apart. The strengths of the charges are 0.00030 C and 0.00080 C. What is the electric force between the charges? (k = 8.99 × 10^9 N m^2/C^2)
• Which statement best distinguishes mass from weight?
• What is the imaginary line that circles Earth halfway between the two magnetic poles?
• A resistor is connected to a 6 V battery. If the resistance is 3 Ω, what is the current?
• What is the SI unit of resistance?
• Differentiate between temperature and heat.
• A material through which current flows easily is a
• In which material does sound travel fastest?
• Why do objects appear colored?
• Which term describes the force that causes a moving electric charge to deviate when it passes through a magnetic field?
• In a series circuit, how does the current behave?
• Which circuit component is used to limit current flow?
• Which phase changes release energy?
• Which of the following is NOT a factor that influences loudness?
• Which phase changes require energy input, and which release energy?
• Which law relates current, voltage, and resistance?
• What happens to light when it hits a mirror?
• What is the rate of electric charge flow?
• Which term describes a material that has zero electrical resistance under certain conditions?
• What does it mean for a solution to be saturated at a given temperature?
• In a solution, which statement correctly identifies solvent and solute?
• Which belts of charged particles located above Earth's equator protect Earth from the solar wind?
• Which description best describes a region where the magnetic field has the same strength at all points?
• How much power does a hair dryer use if it draws 15 A of current at 100 V?
• A shield for computer circuitry is made from a highly permeable substance to do what?
• If a substance has a high specific heat capacity, which statement is true?
• What happens to resistance as the diameter of a conductor increases?
• What moves through an electrolyte when electrical charge flows?
• Which of the following is an example of convection?
• In which medium is the speed of sound fastest?
• How does increasing surface area affect the rate of heat transfer?
• If the voltage in a circuit doubles while the resistance stays the same, what happens to the current?
• Which statement about physical properties is true?
• What is a pure substance?
• Which device transforms the energy of an electric current into another useful form of energy?
• A circuit has a resistance of 20 Ω and a voltage across it of 60 V. What is the current?
• If light travels from air into water and bends toward the normal, what phenomenon is this?
• A material that allows current to flow through it with no resistance is called a
• A simple device that uses the laws of electrostatics to detect small electric charges is a(n) ?
• Which term describes the material property that governs how easily magnetic flux lines pass through a material?
• What do acids and bases produce in solution?
• What is the extent of a planet's magnetic field in space?
• If a saturated solution at a given temperature has more solute added, what happens?
• What is the phase change from liquid to gas called?
• What is the process of diverting unwanted electric charge directly into the earth called?
• In a parallel circuit, the total current equals the sum of the currents through each branch.
• What is a chemical property? Provide an example?
• How does increasing temperature typically affect the solubility of most solids in liquids?
• Which statement is true about alloys?
• Which force causes an electric charge moving through a magnetic field to deviate from its original path?
• Which value equals the product of voltage and current in an electric circuit?
• How do you find the volume of a regular-shaped object?
• An electromagnet's coil has 50 loops. What will happen to the strength of the electromagnet if another 50 loops are added?
• Which term best describes a material that is strongly attracted to magnets and can become a permanent magnet?
• Which of the following is a form of energy?
• What is an example of a first-class lever, and what is the principle behind it?
• What is a mixture?
• What is a series circuit?
• An electrical device designed to hinder current flow is a
• Which statement describes a physical change?
• How is a compound different from a mixture?
• What is an electrical circuit?
• A balloon is rubbed with wool and sticks to a wall. Which statement best explains why the balloon sticks to the wall?
• Which statement about visible light is false?
• Which term refers to the amount of matter in an object?
• How do you determine the density of an irregularly shaped object?
• If you increase mass while keeping volume constant, what happens to density?
• What is an alloy?
• What does the law of conservation of mass state in chemical reactions?
• What is conduction?
• How is density defined?
• What is radiation?
• A device that opens or closes a circuit is a(n) ?
• What is the difference between matter and energy?
• In an ideal simple machine, what happens to the total work?
• Earth's 'north-seeking' pole is called the ?
• What is buoyancy and how does it relate to density?
• Why are metals good conductors of heat?
• What is the phase change from solid to liquid called?
• A diamagnetic substance is described as having no unpaired electrons and being repelled by a magnetic field.
• Name the three methods of heat transfer.
• Which statement about atoms in matter is true?
• A heating coil has a resistance of 22 Ω and can safely handle 15 A of current. What is the maximum voltage that it can be connected to without burning out?
• Which term describes energy due to motion?
• What makes a material a good conductor? What about a good insulator?
• In an electric circuit, how do series and parallel circuits differ?
• Which description best defines sound energy?
• If heat is transferred by convection, what is happening?
• Like magnetic poles repel each other.
• What causes metals to transfer heat quickly?
• What is a chemical change? Provide an example?
• Which factor most directly affects the resistance of a wire?
• Which statement best describes energy in a closed system during transformations?